Is there anything about the macOS 64-bit Steam Client installed on Mojave macOS that would interfere with playing 32-bit games?

I realize the next version beyond Mojave macOS may enforce a 64-bit application restriction. Is there potentially something about the 64-bit Steam Client for the current Mojave macOS 10.14 that could prevent playing 32-bit games distributed and/or installed through it?

For example: this older bundle of games with OS X versions that appear to run on macOS 10.13, despite their requirements sections each listing a more limited version range.

Most of the digging I've done indicates games like the examples above will be playable but I wanted to be sure I'm not missing something about the Steamworks SDK, its Custom Executable Generation (CEG) or a some other detail.